US10100146B2 - Polyester polyquaternary ammonium compound collectors for reverse froth flotation of silicates from nonsulfidic ores - Google Patents
Polyester polyquaternary ammonium compound collectors for reverse froth flotation of silicates from nonsulfidic ores Download PDFInfo
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- US10100146B2 US10100146B2 US15/101,300 US201415101300A US10100146B2 US 10100146 B2 US10100146 B2 US 10100146B2 US 201415101300 A US201415101300 A US 201415101300A US 10100146 B2 US10100146 B2 US 10100146B2
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- 0 *C(*ON)(N)I Chemical compound *C(*ON)(N)I 0.000 description 12
- OBFGKWSRZNZTFX-UHFFFAOYSA-N COCC(C)(C)[Y] Chemical compound COCC(C)(C)[Y] OBFGKWSRZNZTFX-UHFFFAOYSA-N 0.000 description 4
- OVJHSBOEAFLMOB-UHFFFAOYSA-N COCC(C)([Y])CO[V] Chemical compound COCC(C)([Y])CO[V] OVJHSBOEAFLMOB-UHFFFAOYSA-N 0.000 description 4
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/916—Dicarboxylic acids and dihydroxy compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
- B03D1/011—Quaternary ammonium compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
- B03D1/021—Froth-flotation processes for treatment of phosphate ores
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C229/00—Compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C229/02—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
- C07C229/04—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C229/24—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having more than one carboxyl group bound to the carbon skeleton, e.g. aspartic acid
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C229/00—Compounds containing amino and carboxyl groups bound to the same carbon skeleton
- C07C229/02—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton
- C07C229/04—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C229/26—Compounds containing amino and carboxyl groups bound to the same carbon skeleton having amino and carboxyl groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having more than one amino group bound to the carbon skeleton, e.g. lysine
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D219/00—Heterocyclic compounds containing acridine or hydrogenated acridine ring systems
- C07D219/04—Heterocyclic compounds containing acridine or hydrogenated acridine ring systems with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the ring system
- C07D219/06—Oxygen atoms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/06—Phosphate ores
Definitions
- the present invention relates to new polyester polyquaternary ammonium compounds which can be used in a variety of applications, e.g. as corrosion inhibitors, textile conditioners, ingredients in products of personal care, and as collectors for mineral processing.
- the new compound is obtainable by reacting alkanolamines with a mixture of polyalcohols, monocarboxylic acids and dicarboxylic acids followed by quaternising the resulting esters in a known manner.
- polyester polyquaternary ammonium compounds became very attractive for a variety of applications due to their good performance and excellent environmental characteristics.
- EP 0 980 352 B1 relates to compounds obtained by the reaction of triethanolamine with fatty acids and dicarboxylic acids, and/or the corresponding quaternised compounds thereof, and also to textile-softening compositions containing these compounds.
- EP 1 136 471 A1 relates to products based on the esterification of alkanolamines, optionally alkoxylated, dicarboxylic acids and fatty alcohols, optionally alkoxylated, and esterquats obtainable therefrom.
- the products are usable in treatments for softening and conditioning of textiles, paper and hair.
- EP 0 770 595 A1 relates to esterquats obtained by reacting trialkanolamine with a mixture of fatty acids, dicarboxylic acids and sorbitol, optionally ethoxylating the ester, and quaternising the product. These esterquats are used in the preparation of surface active agents, especially for hair and personal care.
- WO 2011/147855 describes the process of floating calcium carbonate containing silicates as impurity, using as collectors ester quaternary compounds, which are obtainable by the condensation of a fatty alcohol, optionally alkoxylated, a fatty acid alkanolamide, optionally alkoxylated, or an alkoxylated secondary amine, a dicarboxylic acid or a derivative thereof and an alkanolamine, where the condensation product has been quaternised by a suitable alkylating agent.
- EP 1 949 963 B1 relates to the flotation of non-sulfidic minerals and ores where polymeric esterquats, obtained by reacting alkanolamines, fatty acids and dicarboxylic acids and quaternising the resulting esters, are used as collectors.
- the reverse froth flotation process comprises the use of the above-mentioned polyester polyquaternary ammonium compounds, obtainable by the condensation of a polyol having 3-4 hydroxyl groups, preferably glycerol, a dicarboxylic acid or a derivative thereof, a fatty acid, and an alkanolamine, and where the condensation product has been quaternised by a suitable alkylating agent.
- FIG. 1 is the SEC chromatogram from Example 1.
- a first aspect of the invention relates to specific polymers obtainable from the condensation of at least one polyol having 3-4 hydroxyl groups, preferably glycerol, optionally alkoxylated, and at least one alkanolamine, optionally alkoxylated, with at least one dicarboxylic acid and at least one fatty acid, followed by quaternisation of the product obtained by the condensation, and in a second aspect the present invention relates to a method for obtaining these polymers.
- a third aspect of the present invention relates to the use of the aforementioned products as flotation collectors, especially for the reverse froth flotation of non-sulfidic ores containing silicates as impurities, such as ores containing calcite, phosphate or ferruginous minerals, and in particular for the reverse froth flotation of apatite.
- a fourth aspect relates to a method for the reverse froth flotation of apatite in the presence of these products.
- polyester polyquaternary ammonium compound containing a polyol having 3-4 hydroxyl groups as a building block according to the present invention is a new compound.
- the present invention thus relates to the manufacturing process of the new polyester polyquaternary ammonium compound and the use of the product, as well as the product itself, where the product is obtainable by the condensation of at least one polyol having 3-4 hydroxyl groups or the alkoxylated product thereof having the formula
- D is —OH, —Cl, or —OR 4 , where R 4 is a C1-C4 alkyl group;
- R3 is a bond, an alkylene radical of formula —(CH 2 ) z —, in which z is an integer from 1 to 10, preferably from 2 to 4, and most preferably 2, and in which the alkylene radical may be substituted by 1 or 2 —OH groups; the group —CH ⁇ CH—, a cycloalkylene, a cycloalkenylene, or an arylene group;
- each x independently is a number between 1 and 5, and the sum of all x on average is a number between 2 and 10
- AO is an alkyleneoxy group having 2-4 carbon atoms
- R 5 is a C1-C4, preferably C1-C3 alkyl group, and most preferably a methyl group, or the group [AO] x H;
- R is a hydrocarbyl group having from 7 to 23, preferably 11 to 21, carbon atoms, optionally substituted
- an alkylating agent suitably a C1-C4 alkyl halide, preferably methyl chloride, or dimethyl sulphate
- the polyol is a compound of formula (I), where Y is —O(CH 2 CH(CH 3 )O) m1 (CH 2 CH 2 O) o (CH 2 CH(CH 3 )O) m2 T, X is H, T is H, and V and Z are both —(CH 2 CH(CH 3 )O) m1 (CH 2 CH 2 O) o (CH 2 CH(CH 3 )O) m2 T.
- This polyol is glycerol or alkoxylated glycerol.
- the values of m1, m2 and o are the same as above, and preferably they are all 0.
- the polymer may for example have the formula
- R is a hydrocarbyl group having from 7 to 23, preferably 11 to 21, carbon atoms, optionally substituted; and R′ is H or R(C ⁇ O); and n is an integer 0-10.
- the average value of k and m will depend on the molar ratios of the appropriate compounds (I), (IIa) or (IIb), (III) and (IV) in the reaction mixture, as well as on the reaction conditions, the m values suitably ranging between 1 and 3, and the k values suitably ranging between 2 and 7.
- the formula above shows one block containing esterified glycerol and diacid, and one block containing esterified alkanolamine and diacid.
- the “block units” consisting of one glycerol esterified with one diacid may of course be distributed randomly with the “block units” consisting of one alkanolamine esterified with one diacid.
- the fatty acids either have been esterfied with a primary OH group of a glycerol unit or of an alkanolamine unit, and thus appear at the end of the chains, or have been esterified with a secondary hydroxyl group of one or several of the glycerol units.
- a suitable method for the preparation of the polyester polyquaternary ammonium compounds subject of the present invention comprises the steps of mixing a compound of formula (I) as defined above with a compound of formula (IIa) or (IIb) as defined above, a compound of formula (III) as defined above, and a part of a compound of formula (IV), effecting an esterification condensation reaction between the compounds in the mixture, adding the rest of compound of formula (IV) and go on esterifying the product in the reaction mixture, adding an alkylating agent to the condensation reaction product and effecting a quaternisation reaction of the condensation product.
- esterification condensation reactions taking place between the compounds (I), (IIa) or (IIb), (III) and (IV) are well-known per se in the art.
- the reactions may be performed with an esterification catalyst, such as a Brönstedt or Lewis acid, for example methanesulfonic acid, p-toluenesulfonic acid, citric acid or BF 3 , or without any catalyst.
- an esterification catalyst such as a Brönstedt or Lewis acid, for example methanesulfonic acid, p-toluenesulfonic acid, citric acid or BF 3 , or without any catalyst.
- a dicarboxylic acid derivative of formula (IIa) wherein D is O—R 4
- the reaction is a transesterification, which alternatively could be performed in the presence of an alkaline catalyst.
- other conventional techniques known by the person skilled in the art could be used starting from other derivatives of the dicarboxylic acids, such as from their anhydr
- esterification could be performed in more than one step, e.g. by first condensing the dicarboxylic acid derivative (IIa) or (IIb) with the alkanolamine (III), and then adding the compound (I) in a next step, followed by addition of (IV).
- the reactions could take place with or without solvents added. If solvents are present during the reaction, the solvents should be inert to esterification, e.g. toluene or xylene.
- the esterification condensation reaction between the components (I), (IIa) or (IIb), (III) and (IV) is suitably effected by heating the mixture at a temperature suitably between 120 and 220° C. for a period of from 2 to 20 hours, optionally at a reduced pressure of from 5 to 200 mbar.
- the molar ratio between the compound of structure (I) and the dicarboxylic acid or derivative (IIa) or (IIb) in the reaction mixture is suitably 1:1.2 to 1:10, more preferably 1:1.5 to 1:5, still more preferably 1:2 to 1:4 and most preferably 1:2 to 1:3, the ratio between the compound of structure (I) and alkanolamine (III) is suitably 1:1 to 1:8, more preferably 1:1.2 to 1:6, still more preferably 1:1.5 to 1:5, still more preferably 1:1.5 to 1:4, still more preferably 1:1.5 to 1:3 and most preferably 1:1.5 to 1:2.5, and the ratio between the compound (IV) and the dicarboxylic acid or derivative (IIa) or (IIb) is preferably 1:1 to 1:5, more preferably 1:1.5 to 1:3 and most preferably 1:1.5 to 1:2.
- Suitable polyols having 3-4 hydroxyl groups include pentaerythritol, glycerol, trimethylolpropane, di-trimethylolpropane, erythritol and threitol.
- Compound (I) and (III) may independently be alkoxylated.
- the alkoxylation reactions are well-known per se in the art. Generally, for the products of the present invention the following applies. If more than one type of alkylene oxide is reacted with the polyol and/or alkanolamine, the different alkylene oxides may be added in blocks in either order, or may be added randomly.
- the alkoxylation may be performed by any suitable method known in the art by using e.g. an alkaline catalyst, such as KOH, or an acid catalyst.
- the dicarboxylic acid derivative of general formula (IIa) or (IIb) could be a dicarboxylic acid as such, a dicarboxylic acid chloride, a diester of a dicarboxylic acid, or a cyclic anhydride of a dicarboxylic acid.
- the most suitable derivatives are the dicarboxylic acids and their corresponding cyclic anhydrides.
- dicarboxylic acid derivatives include oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, phthalic acid, tetrahydrophthalic acid, maleic acid, malic acid, tartaric acid, their corresponding acid chlorides, their corresponding methyl or ethyl esters, and their corresponding cyclic anhydrides.
- the hydrocarbyl group of the fatty acid having formula (IV) may be linear or branched, saturated or unsaturated. When substituted, the substituents are normally one or more hydroxyl groups.
- the fatty acid may suitably be tall oil fatty acid, coco fatty acid, tallow fatty acid, soya fatty acid, rape seed fatty acid, myristoleic acid, palmitoleic acid, oleic acid, linoleic acid, ⁇ -linolenic acid, arachidonic acid, erucic acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, and mixtures thereof.
- An example of a fatty acid that is substituted is ricinoleic acid, which is substituted by a hydroxyl group in the 12 position. The most preferred fatty acids are unsaturated.
- Suitable alkanolamines are N-methyl diethanolamine and N-methyl diisopropanolamine, optionally alkoxylated with ethylene oxide, propylene oxide, butylene oxide or mixtures thereof. If more than one alkylene oxide is reacted with the alkanolamine, the different alkylene oxides may be added in blocks in either order, or may be added randomly.
- quaternisation is a reaction type that is well-known in the art.
- the alkylating agents are suitably selected from the group consisting of methyl chloride, methyl bromide, dimethyl sulphate, diethyl sulphate, dimethyl carbonate and benzyl chloride, the preferred alkylating agents being methyl chloride, dimethyl sulphate, dimethyl carbonate or benzyl chloride, and the most preferred methyl chloride.
- the quaternisation of the alkanolamine could be performed as a first step, which would then be followed by an esterification reaction between (I), (IIa) or (IIb), (IV) and quaternised (III).
- the quaternisation reaction is normally performed in water or a solvent, such as isopropanol (IPA) or ethanol, or in mixtures thereof, the most preferred solvent being IPA.
- the reaction temperature of the quaternising reaction is suitably in the range of from 20 to 100° C., preferably at least 40, more preferably at least 50 and most preferably at least 55° C., and preferably at most 90° C.
- the heating is preferably stopped when the amount of basic nitrogen is ⁇ 0.1 mmol/g, as measured by titration with 0.1 M perchloric acid in glacial acetic acid.
- the invention relates to a method for reverse froth flotation for non-sulfidic ores containing silicate as impurities, especially phosphate ores for the recovery of apatite minerals, in which method the compound or composition described above is used as a collector.
- non-sulfidic ore means ores where the value mineral is not in the form of a sulphide, and includes any ore that is conventionally classified as non-sulfidic, inter alia barite, calamine, calcite, magnesite, cassiterite, coal, feldspar, fluorite, glass sand, graphite, heavy metal oxides, iron ores, kaolin clay, phosphate, potash, pyrochlore, scheelite and talc.
- the effective amount of the collector of the present invention will depend on the amount of impurities present in the pulped phosphate ore and on the desired separation effect, but will in general be in the range of from 100 to 2000 g/ton dry ore, preferably in the range of from 200 to 1500.
- the present invention relates to a pulp comprising crushed and ground phosphate ore, a mineral collector reagent as defined herein, and optionally a depressant and further flotation aids.
- Suitable depressants may be e.g. phosphoric acid, a polysaccharide, alkalized starch, or dextrin.
- flotation aids that may be present in the froth flotation method are extender oils, and frothers/froth regulators, such as pine oil, MIBC (methylisobutyl carbinol) and alcohols such as hexanol and alcohol ethoxylates/propoxylates.
- extender oils such as pine oil, MIBC (methylisobutyl carbinol) and alcohols such as hexanol and alcohol ethoxylates/propoxylates.
- frothers/froth regulators such as pine oil, MIBC (methylisobutyl carbinol) and alcohols such as hexanol and alcohol ethoxylates/propoxylates.
- Quaternisation 225 g of polyester polyamine and 106 g of isopropanol were added to the autoclave and the reaction mixture was heated up to 60° C. Then 19.6 g of methylchloride was added to the reaction mixture. The postreaction was carried out at 75° C. for 17 h. The total amount of basic nitrogen in the final product was 0.060 meq/g.
- the peak at 39.5 minutes is the solvent peak and was therefore not collected for analysis.
- a phosphate ore of sedimentary origin containing 69% of apatite, 9% of silicates (quartz and feldspar), 21% of calcite and 1% of dolomite was used.
- Flotation tests were performed in a laboratory batch flotation machine with 1.5 l cell. 0.266 kg ore sample was added to the cell, tap water (Stenungsund municipal water with hardness 4° dH) was added to 1.4 l volume, and agitation with 1000 rpm was used throughout the tests. The tests were performed at a pH of 7.8-8.0 (natural) and at ambient temperature, which was about 21° C.
- the froth products and the remaining cell product were dried, weighed and analyzed for content of silicate minerals, defined as insoluble in 25% hydrochloric acid.
- the content of acid insoluble remaining in the cell product was then calculated after first, second and third flotation step.
- the selectivity factor is defined as the ratio between distribution of “acid insoluble” and distribution of phosphate in the froth (waste). This should be as high as possible.
- Example 1 The collector synthesized in Example 1 was used in the flotation procedure described above, and the flotation results are displayed in Table 1. One can see from the results, that the new collector provides a high selectivity in the reverse flotation of phosphate containing ores.
- Table 1 The values in Table 1 are weight percentages.
Abstract
Description
where Z=—(CH2CH(CH3)O)m1(CH2CH2O)o(CH2CH(CH3)O)m2T, where T is H, m1 and m2 is independently a number 0-4, preferably m1 and/or m2 is 0, and o is 0 or a number from 1, preferably from 2, to 10, preferably to 5; preferably the sum of all o is 0; Y=—CH2OZ, —CH2CH3 or —OZ; X=H or CH2OZ; and V=Z or
where D is —OH, —Cl, or —OR4, where R4 is a C1-C4 alkyl group; R3 is a bond, an alkylene radical of formula —(CH2)z—, in which z is an integer from 1 to 10, preferably from 2 to 4, and most preferably 2, and in which the alkylene radical may be substituted by 1 or 2 —OH groups; the group —CH═CH—, a cycloalkylene, a cycloalkenylene, or an arylene group;
wherein each x independently is a number between 1 and 5, and the sum of all x on average is a number between 2 and 10, AO is an alkyleneoxy group having 2-4 carbon atoms, R5 is a C1-C4, preferably C1-C3 alkyl group, and most preferably a methyl group, or the group [AO]xH; and
R(C═O)OH (IV)
where R is a hydrocarbyl group having from 7 to 23, preferably 11 to 21, carbon atoms, optionally substituted; followed by reaction with an alkylating agent, suitably a C1-C4 alkyl halide, preferably methyl chloride, or dimethyl sulphate; as a collector in a reverse froth flotation process for non-sulfidic ores containing silicate as impurities.
where R is a hydrocarbyl group having from 7 to 23, preferably 11 to 21, carbon atoms, optionally substituted; and R′ is H or R(C═O); and n is an integer 0-10. The average value of k and m will depend on the molar ratios of the appropriate compounds (I), (IIa) or (IIb), (III) and (IV) in the reaction mixture, as well as on the reaction conditions, the m values suitably ranging between 1 and 3, and the k values suitably ranging between 2 and 7.
TABLE 1 | ||||
Total dosage | Acid insoluble | Phosphate | ||
of collector | remaining | Acid insoluble in | recovery | Selectivity |
(g/t) | in cell (%) | froth (%) | (%) | factor |
700 | 6.02 | 83.93 | 99.32 | 52.81 |
900 | 2.54 | 83.63 | 98.58 | 52.22 |
1100 | 1.52 | 47.79 | 97.43 | 32.94 |
Claims (9)
R(C═O)OH (IV)
R(C═O)OH (IV)
R(C═O)OH (IV)
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US15/101,300 US10100146B2 (en) | 2013-12-18 | 2014-12-15 | Polyester polyquaternary ammonium compound collectors for reverse froth flotation of silicates from nonsulfidic ores |
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EP13198074 | 2013-12-18 | ||
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EP13198074 | 2013-12-18 | ||
EP13198074.0 | 2013-12-18 | ||
US201361919116P | 2013-12-20 | 2013-12-20 | |
US15/101,300 US10100146B2 (en) | 2013-12-18 | 2014-12-15 | Polyester polyquaternary ammonium compound collectors for reverse froth flotation of silicates from nonsulfidic ores |
PCT/EP2014/077669 WO2015091308A1 (en) | 2013-12-18 | 2014-12-15 | Polyester polyquaternary ammonium compound collectors for reverse froth flotation of silicates from nonsulfidic ores |
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CN111036416A (en) * | 2019-11-28 | 2020-04-21 | 东北大学 | Application of efficient inhibitor 5' -ATP-2Na in magnesite direct flotation decalcification |
CN111036415A (en) * | 2019-11-28 | 2020-04-21 | 东北大学 | Application of inhibitor HEDP in magnesite direct flotation decalcification |
WO2022243367A1 (en) | 2021-05-18 | 2022-11-24 | Nouryon Chemicals International B.V. | Polyester polyquats in cleaning applications |
US11596952B2 (en) * | 2018-01-16 | 2023-03-07 | Clariant International Ltd | Esterquats for the flotation of non-sulfidic minerals and ores, and method |
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CN111036416A (en) * | 2019-11-28 | 2020-04-21 | 东北大学 | Application of efficient inhibitor 5' -ATP-2Na in magnesite direct flotation decalcification |
CN111036415A (en) * | 2019-11-28 | 2020-04-21 | 东北大学 | Application of inhibitor HEDP in magnesite direct flotation decalcification |
CN111036415B (en) * | 2019-11-28 | 2021-11-16 | 东北大学 | Application of inhibitor HEDP in magnesite direct flotation decalcification |
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Also Published As
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US20160304663A1 (en) | 2016-10-20 |
EA031803B1 (en) | 2019-02-28 |
NO3083553T3 (en) | 2018-03-17 |
EP3083553A1 (en) | 2016-10-26 |
ES2651856T3 (en) | 2018-01-30 |
KR102343677B1 (en) | 2021-12-27 |
EP3083553B1 (en) | 2017-10-18 |
CA2932866C (en) | 2023-03-07 |
KR20160098286A (en) | 2016-08-18 |
SA516371322B1 (en) | 2019-05-06 |
BR112016013120B1 (en) | 2020-12-29 |
UA119757C2 (en) | 2019-08-12 |
CA2932866A1 (en) | 2015-06-25 |
EA201691195A1 (en) | 2016-10-31 |
WO2015091308A1 (en) | 2015-06-25 |
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